Fitting a PRRT to a K-series

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Adam Godfrey
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Fitting a PRRT to a K-series

I realise this is an old topic that has been discussed many times, but I am finding lots of old links that no longer work when I search for a diagram.

I am about to order some silicone hoses as my current hoses have split and I also want to fit a PRRT (as I'm having trouble with air locks and it sounds a worthwhile mod).

Does anyone have a diagram or picture of a how it should be installed? 
I think I have a pretty good idea but would like to make sure.

Also can anyone advise what additional silicone hoses I will need in addition to a standard K series hose set?  At the moment I think I will need a 32mm t piece (to go in the hose enterning the top of the rad) and a 45 degree 32mm hose (to run down to the PRRT that is fitted to the vertical section coming out of the bottom of the rad)- is this correct,?  Can anyone advise roughly how long the hose needs to be?

thanks in advance!

Adam

 

 

Jonathan Kay
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Private Message sent.

Adam Godfrey
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I've been sent this very helpful file.

I wasn't aware of blanking off the rear bypass, does it look correct to everyone?

thanks

 

nickh7
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Dave at Gemzoe Motorsport does a hose set with a built in bleed valve.

"I take her to the floor, looking for a moment when the world feels right"

rj
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Thank you for posting the secret file

tbirds search:

Blatchat Google Search

Titanium7
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Driving 'The Fat One' Driving

RogNeedham
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Noting that T7 has shared his pic -I'm happy to take a couple of shots tomorrow at closer range if needed. One of the best 7 mods I have done....never looked back

Rog

Adam Godfrey
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Thanks for the pic T7.
Did you have the hose that runs around the back of the engine still connected into the old thermostat housing on the block?

Rog, thanks for the offer, some close up pics would be much appreciated.

Titanium7
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Yes still connected. Also left the original stat in place after cutting out the centre bulb and spring etc., this is because of the outer rubber seal needs to be still used. The additional hoses and connectors were standard generic ones off eBay, just a 'T' and a straight connector is all you need.

The system worked a treat and kept the temp whilst the car was moving locked at 80C, never had an airlock again. One tip, buy the genuine PRT not the cheaper after market one.

Driving 'The Fat One' Driving

RogNeedham
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Yep, same as T7.  I used to work for the company that owned the former Rover parts business, so I took  out the old thermostat and fitted the replacement through flow item. I’ve got a bag of about ten if you’d like me to send you one.

Rog

brianjhall31
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Very interested in doing this mod!   I was concerned by the earlier post that the hose that runs around the rear of the engine was deleted.   I have the "submarine" mod where the ECU and Temp Gauge sensors are moved from above the exhaust manifold and repositioned to the rear RH side of the engine.  The earlier post diagram showed the sensors back above the exhaust which I would consider a retrograde step.

Only other observation from the photo is that this car does not have an Apollo Tank fitted.  Does the effect the hose routing or layout?

Is there a definitive parts list for the PRRT (genuine Rover part) and the Hose Kit (would like to go Silicon as current hoses are looking tired)

Put me down for one of your through flow Thermostats please Rog!

Brian J Hall